Frank Williamson Benson (March 20, 1858 – April 14, 1911) was an American politician, a Republican, and the 12th Governor of Oregon from 1909 to 1910.

A native of California, Benson also served as educator, a land office clerk, and was twice elected as Oregon Secretary of State.

Benson was born in San Jose, California, in 1858 to a minister sent west by the Methodist Episcopal Church.

His father, Henry Clarke Benson, moved the family to Portland, Oregon, to become editor of the Pacific Christian Accord in 1864.

)[citation needed] Benson did not resign as Secretary of State, and held both positions in violation of the Oregon Constitution.

On June 15, 1910, Benson telephoned his private secretary, and transferred the Governor's powers to Oregon State Senate President Jay Bowerman until he could return to Salem, which he anticipated would be by July 20, 1910.